body,html{

  margin:0;
  padding:0;
}

/* input{
  display:block;
  width:200px;
  font-size:1.5em;
  height:100px;
  margin:50px auto;
} */
.timer-button{
  height: 50xp;
  width: 150xp;
  font-size: 1.2em;
}
#add,#del{
  width: 150px;
  height: 50px;
  font-size: 20px;
}